The “prefix-free” script, often referred to as “Autoprefixer,” is not a specific script or tool. Instead, it generally refers to the concept of automatically adding vendor prefixes to CSS properties to ensure cross-browser compatibility. Vendor prefixes are prefixes added to CSS property names to implement experimental or browser-specific features.

Note: Autoprefixer is a popular tool used for this purpose. It automatically adds the necessary vendor prefixes based on the official W3C specification and can be integrated into build processes or used through various development tools.

How Autoprefixer Works ?

Installation: Autoprefixer can be installed using npm (Node Package Manager) or integrated into various build tools.

npm install autoprefixer

Usage in CSS: Autoprefixer can be used in the CSS file or through build tools. It’s often integrated with tools like PostCSS.

/* Before running Autoprefixer */
.example {
  display: flex;
  transition: transform 1s;
}

/* After running Autoprefixer */
.example {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-transition: -webkit-transform 1s;
  transition: transform 1s;
}

Automatic Prefixing: Autoprefixer analyzes the CSS file and adds vendor prefixes for properties that require them, based on browser support and the specified rules in the configuration.

const autoprefixer = require('autopreIfixer');

postcss([autoprefixer])
  .process(css, { /* options */ })
  .then(result => console.log(result.css));